Structural and the optical dispersion parameters of nano-CdTe thin film/flexible substrate

Physical properties of vacuum evaporated CdTe thin films with post-deposition thermal annealing

“…of crystallites per unit area (N) is found in the range (74.65-292.26) Â 10 11 cm À 2 and observed to be decreased for thermally annealed films due to increase in average grain size. The results are supported and in agreement with earlier reported work [10,17]. Fig.…”

“…Some new small peaks corresponding to (220) and (211) orientations are also observed for annealed films which might be an indication of phase change at higher annealing temperature. The results are in agreement with the earlier reported work by other authors [3,5,10]. The crystallographic parameters like lattice constant (a), inter planner spacing (d), grain size (D), internal strain (ε), dislocation density (δ) and number of crystallites per unit area (N) were calculated using relations concerned [15,16] and tabulated in Table 1.…”

“…Thermal vacuum evaporation is one of the most commonly used and suitable technique to fabricate CdTe thin films because it has advantages like most productive, very high deposition rate, low material consumption and low cost of operation. A study on structural and optical dispersion parameters of CdTe thin films was undertaken by Shaaban et al [10] employing thermal evaporation technique. They found that the crystallite size and refractive index were increased with film thickness.…”

Structural and optical properties of CdTe-nanocrystals thin films grown by chemical synthesis

“…The dislocation density was 2.66 Â 10 15 lines/m 2 , while the microstrain was 8.70 Â 10 À 3 . Shaaban et al [15] report that the microstrain of CdTe films increases as decreases the thickness, therefore the high value of microstrain of the CdTe film grown by chemical synthesis may be due to reduced thickness $ 170 nm [15].…”

Optimization of physical properties of vacuum evaporated CdTe thin films with the application of thermal treatment for solar cells

“…The properties of CdTe thin films are strongly dependent upon the fabrication techniques, annealing treatment, film thickness, substrate, CdCl 2 treatment, doping and substrate temperature. An extensive research on the structural, optical and optoelectronic properties of CdTe thin films have been carried out so far by several researchers using different deposition techniques [26][27][28][29][30][31][32][33][34][35][36]. However, thermal annealing based properties of vacuum evaporated CdTe thin films are not well understood for photovoltaic applications.…”